HP ProBook 4445s User Manual page 9

Dynamically choosing a boot device using the f9 prompt .................................................. 76
Setting a MultiBoot Express prompt .................................................................................. 76
Entering MultiBoot Express preferences ........................................................................... 76
Appendix A Troubleshooting and support .................................................................................................... 77
Troubleshooting .................................................................................................................................. 77
The computer is unable to start up .................................................................................... 77
The computer screen is blank ............................................................................................ 77
Software is functioning abnormally .................................................................................... 77
The computer is on but is not responding .......................................................................... 77
The computer is unusually warm ....................................................................................... 78
An external device is not working ...................................................................................... 78
The wireless network connection is not working ................................................................ 78
The optical disc tray does not open for removal of a CD or DVD ...................................... 79
The computer does not detect the optical drive ................................................................. 80
A disc does not play ........................................................................................................... 80
A movie is not visible on an external display ..................................................................... 80
The process of burning a disc does not begin, or it stops before completion .................... 81
Contacting support ............................................................................................................................. 81
Labels ................................................................................................................................................. 82
Appendix B Cleaning your computer ............................................................................................................. 83
Cleaning products .............................................................................................................................. 83
Cleaning procedures .......................................................................................................................... 83
Cleaning the display .......................................................................................................... 83
Cleaning the sides and cover ............................................................................................ 83
Cleaning the TouchPad and keyboard .............................................................................. 84
Appendix C Specifications .............................................................................................................................. 85
Input power ......................................................................................................................................... 85
Operating environment ....................................................................................................................... 85
Appendix D Electrostatic discharge .............................................................................................................. 86
Index ................................................................................................................................................................... 87
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